Last updated on October 1st, 2022 at 09:58 pm
Class 7 Reproduction in Plants Extra Question Answers
Class 7 Reproduction in Plants Extra Question Answers | Class 7 Science NCERT Solutions | for all the students of CBSE / ICSE / State Board…
Fill in the blanks: –
Yeast reproduces by ………… [budding]
…………..propagation refers to a process by which plants produce new plants without seeds.[ Vegetative ]
………….is the process of fusing male and female gametes.[ Fertilization]
Flowers with both male and female reproductive parts are called …… flowers.[bisexual]
The reproductive parts of flowering plants are ………..&………..[stamens and pistils]
The transfer of pollen from an anther to a stigma of a flower is called ……[pollination]
The ………..of plants are roots that grow horizontally.[ rhizomes]
The spirogyra reproduces through ………..[fragmentation]
Short answer question
Que – Which plant reproduces by spore formation?
Molds, ferns, and mosses reproduce by spore formation.
Que – How seeds are dispersed?
Seeds are dispersed by water, wind, and animals.
Que – Which plants can disperse their sees through self-explosion?
Peas, germanium, balsam, and other plants can disperse their seed through self-explosion.
Que – What are the different types of pollination found in flowering plants?
There are two types of pollination in plants self-pollination and cross-pollination.
Long Answer Question
Que – What is germination? What are the conditions required for germination?
Germination is the process of converting seeds into new plants. Once seeds are sown, they require a specific environment for growth. Water, air, soil, and temperature all influence how deep the seed is planted. As soon as all these conditions are met, the seed germinates into a baby plant with the help of the stored food in the seeds. When a seed takes in water, it activates its enzymes. By using these enzymes, stored food becomes soluble and moves into radicles and plumules for growth.
Que – Self-Pollination, and Cross-Pollination
This occurs between the flowers of the same plant. It does not require any pollination agents. This involves the maturation of pollen and eggs at the same time.
It occurs between the flowers of plants of the same variety. Pollination is carried out by air, water, etc. It is not necessary for pollen and eggs to mature simultaneously.